High-sealing-performance photovoltaic junction box structure

Abstract

The utility model discloses a photovoltaic junction box structure with high sealing performance, which relates to the technical field of photovoltaic junction boxes and comprises a junction box body and a junction box cover, and two sides of the junction box body are fixedly connected with junction pipes. Through the arrangement of the junction box body, the junction box cover, the junction pipe, the junction cable, the first limiting plate, the non-slip mat, the locking bolt, the second limiting plate, the sealing rubber ring, the sealing groove, the sealing insertion plate, the sealing connection mat, the first rubber sealing mat and the second rubber sealing mat, when the junction cable is inserted into the junction pipe, the locking nut is rotated; the second limiting plate moves downwards and is matched with the first limiting plate to limit and fix the wiring cable, so that the problem that when the wiring cable shakes, a gap is generated between the wiring cable and the wiring pipe to influence the sealing performance of the junction box can be avoided, and the wiring cable can be reinforced; the problem that the wiring cable falls off under the action of external force is avoided, and the sealing performance of the junction box is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic junction box technology, and in particular to a high-sealing photovoltaic junction box structure. Background Technology

[0002] A photovoltaic junction box is a connecting device between a solar cell array composed of solar cell modules and a solar charging control device. Its main function is to connect and protect the solar photovoltaic modules, connect the power generated by the solar cells to external lines, and conduct the current generated by the photovoltaic modules.

[0003] The patent titled "A Photovoltaic Junction Box" (patent application number: 202023105780.6) discloses a photovoltaic junction box, including a box body. A first inlet pipe and a second inlet pipe are coaxially arranged on opposite sides of the box body. Two lead screws are arranged parallel to each other inside the box body. The plane of the two lead screws is perpendicular to the axis of the first inlet pipe. The two ends of the lead screws have oppositely opposite external threads, and are respectively screwed with an upper clamp and a lower clamp, allowing the upper and lower clamps to move closer or further apart. When the upper and lower clamps abut, the contact surface coincides with the axis of the first inlet pipe. This effectively fixes the cable joint and prevents the joint from detaching due to external pulling.

[0004] In the above case, when wiring the cables, the cables to be connected were directly threaded through the first and second inlet pipes. When the cables sway, gaps will form between the cables and the first and second inlet pipes, resulting in poor waterproofing and dustproofing of the photovoltaic junction box. This reduces the sealing performance of the photovoltaic junction box and causes inconvenience in its use. Therefore, it is necessary to propose a high-sealing photovoltaic junction box structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a highly sealed photovoltaic junction box structure to solve the problem mentioned in the background art where the photovoltaic junction box has poor sealing performance, which reduces its waterproof and dustproof effect and causes inconvenience in its use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing photovoltaic junction box structure, including a junction box body and a junction box cover, wherein wiring pipes are fixedly connected to both sides of the junction box body, wiring cables are provided inside the wiring pipes, and a sealing groove is provided inside the top of the junction box body;

[0007] The side of the wiring tube is provided with a sealing and limiting mechanism, which includes a first limiting plate, a locking bolt and a second limiting plate. The side of the first limiting plate is fixedly connected to the side of the wiring tube, and the inside of the first limiting plate is inserted into the outside of the locking bolt. The outside of the locking bolt is inserted into the inside of the second limiting plate.

[0008] The bottom of the junction box cover is provided with a waterproof and dustproof mechanism, which includes a sealing plug plate, a sealing connecting gasket, a first rubber sealing gasket, and a second rubber sealing gasket. The top of the sealing plug plate is fixedly connected to the bottom of the junction box cover, the side of the first rubber sealing gasket is fixedly connected to the outer side of the sealing plug plate, the side of the second rubber sealing gasket is fixedly connected to the inner side of the sealing plug plate, and the top of the sealing connecting gasket is fixedly connected to the bottom of the junction box cover.

[0009] Preferably, both the first limiting plate and the second limiting plate are semi-circular arc-shaped, and both the first limiting plate and the second limiting plate are fixedly connected with anti-slip pads inside.

[0010] Preferably, a sealing rubber ring is fixedly connected to the inner wall of the wiring conduit, and the wiring conduit penetrates and extends into the interior of the junction box.

[0011] Preferably, the locking bolt is externally threaded with a locking nut, which is located below the first limiting plate.

[0012] Preferably, the sealing insert plate is inserted into the sealing groove.

[0013] Preferably, a fixing bolt is inserted inside the junction box cover, and a bolt hole is provided on the top of the junction box body, with the fixing bolt and the bolt hole being threadedly connected.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] By configuring the junction box body, junction box cover, wiring conduit, wiring cable, first limit plate, anti-slip pad, locking bolt, second limit plate, sealing rubber ring, sealing groove, sealing insert plate, sealing connecting gasket, first rubber sealing gasket, and second rubber sealing gasket, the junction box can achieve the following configuration: when the wiring cable is inserted into the wiring conduit, the sealing rubber ring seals the wiring cable. Then, rotating the locking nut causes the second limit plate to move downwards, cooperating with the first limit plate to limit and fix the wiring cable. This prevents the wiring cable from slipping or moving during use. The problem of gaps between the cable and the conduit affecting the sealing of the junction box can be addressed by reinforcing the cable to prevent it from falling off under external force. Furthermore, sealing gaskets can be used to seal the connection between the junction box body and the junction box cover. When the sealing plate is inserted into the sealing groove, the presence of No. 1 and No. 2 rubber sealing gaskets on both sides ensures that the sealing plate is firmly inserted into the sealing groove, sealing the junction box body. This double sealing effect further improves the sealing performance of the junction box. Attached Figure Description

[0016] Figure 1 This is a front view of the high-sealing photovoltaic junction box structure of this utility model.

[0017] Figure 2 This is a side view of the high-sealing photovoltaic junction box structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the junction box in this utility model.

[0019] Figure 4 This is a schematic diagram of the junction box cover in this utility model.

[0020] Figure 5 This is a schematic diagram of the wiring conduit in this utility model.

[0021] In the diagram: 1. Junction box body; 2. Junction box cover; 3. Wiring conduit; 4. Wiring cable; 5. First limit plate; 6. Anti-slip pad; 7. Locking bolt; 8. Second limit plate; 9. Sealing rubber ring; 10. Sealing groove; 11. Sealing insert plate; 12. Sealing connection gasket; 13. First rubber sealing gasket; 14. Second rubber sealing gasket; 15. Fixing bolt; 16. Bolt hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figures 1-5 The high-sealing photovoltaic junction box structure shown includes a junction box body 1 and a junction box cover 2. Connecting pipes 3 are fixedly connected to both sides of the junction box body 1. Sealing rubber rings 9 are fixedly connected to the inner walls of the connecting pipes 3, and the connecting pipes 3 penetrate and extend into the interior of the junction box body 1. A connecting cable 4 is installed inside the connecting pipe 3. A sealing groove 10 is formed inside the top of the junction box body 1. When the connecting cable 4 is inserted into the connecting pipe 3, the sealing rubber rings 9 seal the connecting cable 4, thereby improving the sealing performance of the junction box body 1.

[0024] In addition, a sealing and limiting mechanism is provided on the side of the wiring pipe 3. The sealing and limiting mechanism includes a first limiting plate 5, a locking bolt 7, and a second limiting plate 8. The side of the first limiting plate 5 is fixedly connected to the side of the wiring pipe 3, and the inside of the first limiting plate 5 is inserted into the outside of the locking bolt 7. The outside of the locking bolt 7 is inserted into the inside of the second limiting plate 8. Both the first limiting plate 5 and the second limiting plate 8 are semi-circular arc-shaped, and anti-slip pads 6 are fixedly connected inside both the first limiting plate 5 and the second limiting plate 8. The locking bolt 7 is threaded with a locking nut, which is located below the first limiting plate 5. During the use of the junction box, when the wiring cable 4 is inserted into the wiring conduit 3, rotating the locking nut causes the second limiting plate 8 to move downwards, cooperating with the first limiting plate 5 to limit and fix the wiring cable 4. The anti-slip pad 6 increases the friction between itself and the wiring cable 4, improving the stability of fixing the wiring cable 4. This not only prevents gaps from forming between the wiring cable 4 and the wiring conduit 3 when the wiring cable 4 shakes, thus affecting the sealing of the junction box, but also reinforces the wiring cable 4 to prevent it from falling off under external force, bringing convenience to the use of the junction box.

[0025] Finally, a waterproof and dustproof mechanism is provided at the bottom of the junction box cover 2. The waterproof and dustproof mechanism includes a sealing plug plate 11, a sealing connecting gasket 12, a first rubber sealing gasket 13, and a second rubber sealing gasket 14. The top of the sealing plug plate 11 is fixedly connected to the bottom of the junction box cover 2. The side of the first rubber sealing gasket 13 is fixedly connected to the outer side of the sealing plug plate 11. The side of the second rubber sealing gasket 14 is fixedly connected to the inner side of the sealing plug plate 11. The top of the sealing connecting gasket 12 is fixedly connected to the bottom of the junction box cover 2. The sealing plug plate 11 is inserted into the sealing groove 10. A fixing bolt 15 is inserted into the inside of the junction box cover 2. A bolt hole 16 is opened on the top of the junction box body 1. The fixing bolt 15 is threadedly connected to the bolt hole 16. The sealing connection gasket 12 can be used to seal the connection between the junction box body 1 and the junction box cover 2. When the sealing plug 11 is inserted into the sealing groove 10, since the sealing plug 11 is provided with a first rubber sealing gasket 13 and a second rubber sealing gasket 14 on both sides, the sealing plug 11 will be firmly inserted into the sealing groove 10, sealing the junction box body 1. Through the effect of double sealing, the sealing performance of the junction box is further improved.

[0026] Working principle: When the wiring cable 4 is inserted into the wiring conduit 3, the sealing rubber ring 9 seals the wiring cable 4. Then, the locking nut is rotated, causing the second limiting plate 8 to move downwards, cooperating with the first limiting plate 5 to limit and fix the wiring cable 4. The anti-slip pad 6 increases the friction between itself and the wiring cable 4, improving the stability of the wiring cable 4. This not only prevents gaps from forming between the wiring cable 4 and the wiring conduit 3 when the wiring cable 4 shakes, thus affecting the sealing performance of the junction box, but also reinforces the wiring cable 4 to prevent it from falling off under external force, bringing convenience to the use of the junction box. The sealing connecting gasket 12 can be used to seal the connection between the junction box body 1 and the junction box cover 2. When the sealing insert 11 is inserted into the sealing groove 10, because the sealing insert 11 is provided with a first rubber sealing gasket 13 and a second rubber sealing gasket 14 on both sides, the sealing insert 11 will be firmly inserted into the sealing groove 10, sealing the junction box body 1. Through the double sealing effect, the sealing performance of the junction box is further improved.

Claims

1. A high-sealing photovoltaic junction box structure, comprising a junction box body (1) and a junction box cover (2), characterized in that: The junction box (1) is fixedly connected to two sides by a wiring pipe (3), and a wiring cable (4) is provided inside the wiring pipe (3). A sealing groove (10) is opened inside the top of the junction box (1). The side of the wiring tube (3) is provided with a sealing and limiting mechanism. The sealing and limiting mechanism includes a first limiting plate (5), a locking bolt (7) and a second limiting plate (8). The side of the first limiting plate (5) is fixedly connected to the side of the wiring tube (3), and the inside of the first limiting plate (5) is inserted into the outside of the locking bolt (7). The outside of the locking bolt (7) is inserted into the inside of the second limiting plate (8). The bottom of the junction box cover (2) is provided with a waterproof and dustproof mechanism, which includes a sealing plug plate (11), a sealing connecting gasket (12), a first rubber sealing gasket (13) and a second rubber sealing gasket (14). The top of the sealing plug plate (11) is fixedly connected to the bottom of the junction box cover (2), the side of the first rubber sealing gasket (13) is fixedly connected to the outside of the sealing plug plate (11), the side of the second rubber sealing gasket (14) is fixedly connected to the inside of the sealing plug plate (11), and the top of the sealing connecting gasket (12) is fixedly connected to the bottom of the junction box cover (2).

2. The high-sealing photovoltaic junction box structure according to claim 1, characterized in that: Both the first limiting plate (5) and the second limiting plate (8) are semi-circular arc-shaped, and both the first limiting plate (5) and the second limiting plate (8) are fixedly connected with anti-slip pads (6).

3. The high-sealing photovoltaic junction box structure according to claim 1, characterized in that: The inner wall of the wiring pipe (3) is fixedly connected with a sealing rubber ring (9), and the wiring pipe (3) penetrates and extends into the interior of the junction box (1).

4. The high-sealing photovoltaic junction box structure according to claim 1, characterized in that: The locking bolt (7) has a locking nut connected to its external thread, and the locking nut is located below the first limiting plate (5).

5. The high-sealing photovoltaic junction box structure according to claim 1, characterized in that: The sealing insert (11) is inserted into the sealing groove (10).

6. The high-sealing photovoltaic junction box structure according to claim 1, characterized in that: A fixing bolt (15) is inserted inside the junction box cover (2), and a bolt hole (16) is opened on the top of the junction box body (1). The fixing bolt (15) is threadedly connected to the bolt hole (16).

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